Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong dao so snippets" » "duong dao so snippets", "truong dao so snippets", "luong giao so snippets", "luong dai so snippets", "luong dao o snippets", "luong dao do snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("luong dao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong dao so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong dao so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong dao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.